The Vickers hardness tester‘s working principle uses the test developed by Sandland and smith in 1924 to aid the Brinell methods of hardness testing. Vickers test is considered the most straightforward method than other hardness tests since the calculation involved is independent of indenter size. Any material can be used irrespective of the hardness with indenter. In the Vickers hardness test, the observation is made on the questioned material’s ability to resist plastic deformation from a data point. The Vickers test’s best things are that it can be used for all type of metals, and it contains the broadest scale compared to other hardness tests. Vickers test uses a unit hardness called Vickers pyramid number or diamond pyramid hardness. The intender’s characteristics in the Vickers tester should contain abilities to produce similar impressions regardless of the size and have high self-deformation resistance.
Purpose of Vickers Hardness Test
Vickers test values are independent of any test force, but from 500gf to 50kgf, it is possible to have similar results irrespective of the force used for the same material under the test. Some of the most helpful fields to apply Vickers test include quality control in manufacturing activities, material evaluation and development, and research efforts. The distance of indentations should be more than three indentation diameter when doing the Vickers hardness test to avoid work-hardened regions’ interaction. Vickers hardness tester is used mainly for testing components in the automotive and aerospace industry, materials, and samples in laboratories for evaluation.